General Letter of Product Certification/Compliance Construction Fastener Products Stanley Bostitch Construction staples and nails are manufactured globally to the tolerances of ASTM F1667 in compliance with construction code reports NER-272 and ICC ESR-1539 which supersedes ICBO ES ER-2403. Products meeting these requirements are identified with "NER-272" and "ESR-1539" referenced on the product packaging. These reports are accepted by all Building code agencies. Staples and nails not covered by these reports are of proprietary specifications, which may be covered by other listings. These listings are identified on the product label. Consumer Staple, Industrial and Office Fastener Products Consumer Staples and office staples are manufactured globally and comply with Stanley Bostitch proprietary specifications. All products are considered manufactured for "off-the-shelf" sales without specific product certification references.